!4756 [sync] PR-4737: blk-mq: fix IO hang from sbitmap wakeup race

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/4737 
 
PR sync from: Li Lingfeng <lilingfeng3@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/X4NOJSSOIJJK25PURVREUMAKPGU6JLO4/ 
 
https://gitee.com/openeuler/kernel/issues/I943Q7 
 
Link:https://gitee.com/openeuler/kernel/pulls/4756

 

Reviewed-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>